CN116105945A

CN116105945A - Sealing detector

Info

Publication number: CN116105945A
Application number: CN202310292473.2A
Authority: CN
Inventors: 石高飞; 洪坚; 高清
Original assignee: Duoke Intelligent Equipment Changshu Co ltd
Current assignee: Duoke Intelligent Equipment Changshu Co ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-05-12

Abstract

The invention provides a sealing detector in the technical field of mechanical equipment, which comprises a detection bin, an air nozzle, a soft emulsion film and an upper cover, wherein the upper cover is arranged on the detection bin, and the soft emulsion film is arranged in the detection bin. The product to be detected is arranged at the bottom of the soft emulsion film, the air tap of the product to be detected in the detection bin comprises an air tap I and an air tap II, the air tap I is used for evacuating air in the detection bin, the air tap II is used for connecting a pressure gauge, and the pressure value in the detection bin is detected through the pressure gauge. The invention has simple manufacturing process and low cost, does not need positive pressure air source for detecting the product, does not need soaking and pressing for detecting the product to be detected, and does not damage the product. And the detection of the micro-leakage product and the false seal product is more sensitive, and the detected qualified product can also be used as a qualified product to flow into a downstream process, so that the waste is avoided.

Description

Sealing detector

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to a sealing detector.

Background

One of the existing sealing detection modes is a water detection mode, namely, products are placed into a sealed container filled with water and vacuumized in the sealed container, so that internal and external pressure differences are generated on the products immersed in the water, and whether the products to be tested bubble or not is observed, so that the sealing performance of the products is judged. However, this water detection mode has the following disadvantages: not suitable for waterproof products, and has low applicability; if the product is not sealed well, substances in the product flow out to pollute the water body, and the detection water needs to be replaced frequently; whether bubbling exists or not is observed, more artificial subjective factors are occupied, and the detection precision is low; the detection product is inconvenient to put in and take out; the detection efficiency is low, and the operation process time is long.

The second of the existing sealing detection modes is a pressure detection mode, a tool die is used for pressing a test product, a depressurization method is adopted, the test product is directly pressed through a cylinder rod, a pressure value is fed back by a pressure sensor during pressing, and the sealing performance of the product is judged according to depressurization feedback of the pressure value. However, this pressure detection mode has the following disadvantages: the applicability is low, and the tooling die is required to be readjusted for detecting different products; detecting different products, and adjusting different pressing strokes; the detection product is inconvenient to put in and take out; the detection efficiency is low, and the operation process time is long; detecting different products, and requiring different tooling dies; additional tooling mold expense is required; direct pressing of the tooling die may damage the detection product; an external air source is needed; the detected product cannot flow into the downstream process as a qualified product.

Further, as found by prior art search, chinese patent publication No. CN106537108A discloses a flexible leak test cavity that can be evacuated and has a cavity wall surrounding the test cavity volume. The flexible test chamber is characterized in that at least one region of the chamber wall consists of two film layers of chamber wall material, wherein at least the film layer facing the volume of the test chamber is made of a flexible material; also between the two membrane layers, an overpressure with respect to the atmosphere surrounding the test cavity is adapted to be generated. Through the evacuation to annular cavity for the product is wrapped up, and the pressure value decay reduces in the positive pressure cavity if the product of being wrapped up leaks gas, thereby is monitored by pressure sensor, with the sealing performance of judging the product. The invention has the following disadvantages: the product detection needs a positive pressure air source, and has the advantages of complex manufacturing process, high production cost and high selling price.

Disclosure of Invention

In view of the drawbacks of the prior art, an object of the present invention is to provide a seal inspection machine.

The invention provides a sealing detector which comprises a detection bin, an air tap and a soft emulsion film, wherein the soft emulsion film is arranged in the detection bin;

the air tap comprises an air tap I and an air tap II, the soft emulsion film is used for evacuating air in the detection bin through the air tap I and absorbing and wrapping the air in the detection bin on a product to be detected, the air tap II is used for connecting a pressure gauge, and the air pressure value in the detection bin is detected through the pressure gauge.

In some embodiments, the first air tap and the second air tap are arranged at the outer bottom of the detection bin in a penetrating way.

In some embodiments, the device further comprises an upper cover, the upper cover is arranged at the top of the detection bin, a sealing ring is arranged between the upper cover and the detection bin, the sealing ring comprises a first sealing ring, and the edge of the soft emulsion film is fixed between the upper cover and the first sealing ring.

In some embodiments, the sealing ring further comprises a second sealing ring, and the first sealing ring is attached to the second sealing ring.

In some embodiments, the air tap further comprises an air tap III and an air tap IV, the air tap IV is arranged on the top of the upper cover in a penetrating way and used for circulating air, and the air tap III is arranged on the outer bottom of the detection bin in a penetrating way and used for circulating air.

In some embodiments, the soft emulsion film and the upper cover together form a closed inner cavity, and air is circulated in the closed inner cavity through the air tap.

In some embodiments, a breathable film is further disposed in the detection bin, and the breathable film is disposed between the soft emulsion film and the product to be detected.

In some embodiments, a ventilation sponge is further arranged in the detection bin, and the ventilation sponge is arranged between the product to be detected and the inner bottom of the detection bin.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the first air tap and the second air tap are arranged at the outer bottom of the detection bin, the first air tap is used for evacuating air in the detection bin, the second air tap is used for connecting the pressure gauge, the computer monitors the pressure gauge, and if a product to be detected leaks air, the negative pressure value of the pressure gauge correspondingly attenuates to be smaller, so that the leakage of the product to be detected is judged;

meanwhile, the invention has simple manufacturing process and low cost, the product to be detected does not need a positive pressure air source, the product to be detected does not need to be immersed and pressed, and the product is not damaged;

and the detection of the micro-leakage product and the false seal product is more sensitive, and the detected qualified product can also be used as a qualified product to flow into a downstream process, so that the waste is avoided.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic cross-sectional view of a seal inspection machine according to the present invention.

Reference numerals:

air tap 1 upper cover 7

Air tap two 2 sealing rings one 8

Air tap three 3 sealing rings two 9

Breathable film 10 of detection bin 4

Air-permeable sponge 11 of soft emulsion film 5

Air cock four 6 products 12 to be inspected

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.

As shown in fig. 1, the invention comprises a detection bin 4, an air tap and a soft emulsion film 5, wherein the soft emulsion film 5 is arranged in the detection bin 4. The air tap comprises an air tap I1 and an air tap II 2, the soft emulsion film 5 is pumped out through the air tap I1 to detect the air adsorption package in the bin 4 on the product 12 to be detected, and the air tap II 2 is used for connecting a pressure gauge, and the air pressure value in the bin 4 is detected through the pressure gauge.

Firstly, qualified products are placed into a detection bin 4 as calibration objects, an automatic valve is automatically opened in a four-air-tap 6 joint mode, air flows into a closed inner cavity formed by a soft emulsion film 5 and an upper cover 7 through the four-air-tap 6, meanwhile, an automatic valve is automatically opened in a 1 joint mode, the 1-air-tap is used for vacuumizing the air in the detection bin 4, and therefore the soft emulsion film 5 is adsorbed and wrapped to be detected products 12 to finish calibration, the air-tap 7 is closed, and the qualified products are taken out.

Placing the product 12 to be detected, opening the first air tap 1 to vacuumize, immediately closing after 0.2 seconds, connecting the second air tap 2 with the pressure gauge, and monitoring the pressure gauge by a computer, wherein if the product 12 to be detected leaks air, the negative pressure value of the pressure gauge is attenuated to be smaller, so that the leakage of the product 12 to be detected is judged. The third air tap 3 is connected with an automatic valve, and the valve is automatically opened to communicate with the outside air through the third air tap 3 before the upper cover 7 is opened, so that the upper cover 7 is conveniently opened.

Working principle:

the first air tap of the invention evacuates and detects the air in the stock bin, the second air tap is connected with the pressure gauge, the computer monitors the pressure gauge, and if the product to be detected leaks air, the negative pressure value of the pressure gauge correspondingly attenuates to be smaller, thereby judging the product to be detected leaks air.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.

The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.

Claims

1. The sealing detector is characterized by comprising a detection bin (4), an air tap and a soft emulsion film (5), wherein the soft emulsion film (5) is arranged in the detection bin (4);

the air tap comprises an air tap I (1) and an air tap II (2), the soft latex film (5) is pumped out through the air tap I (1) the air in the detection bin (4) is adsorbed and wrapped on a product (12) to be detected, and the air tap II (2) is used for connecting a pressure gauge, and the air pressure value in the detection bin (4) is detected through the pressure gauge.

2. The sealing detection machine according to claim 1, wherein the first air tap (1) and the second air tap (2) are arranged at the outer bottom of the detection bin (4) in a penetrating way.

3. The sealing detection machine according to claim 1, further comprising an upper cover (7), wherein the upper cover (7) is arranged at the top of the detection bin (4), a sealing ring is arranged between the upper cover (7) and the detection bin (4), the sealing comprises a first sealing ring (8), and the edge of the soft emulsion film (5) is fixed between the upper cover (7) and the first sealing ring (8).

4. A seal inspection machine according to claim 3, wherein the seal ring further comprises a second seal ring (9), and the first seal ring (8) is disposed in contact with the second seal ring (9).

5. The sealing detection machine according to claim 3, wherein the air tap further comprises an air tap III (3) and an air tap IV (6), the air tap IV (6) is arranged on the top of the upper cover (7) in a penetrating manner and used for circulating air, and the air tap III (3) is arranged on the outer bottom of the detection bin (4) in a penetrating manner and used for circulating air.

6. A seal inspection machine according to claim 3, characterized in that the soft emulsion film (5) and the upper cover (7) together form a closed cavity, and the air is circulated in the closed cavity through the air tap four (6).

7. The seal detection machine according to claim 1, characterized in that an air-permeable film (10) is further arranged in the detection bin (4), and the air-permeable film (10) is arranged between the soft emulsion film (5) and the product (12) to be detected.

8. The sealing detection machine according to claim 1, characterized in that an air-permeable sponge (11) is further arranged in the detection bin (4), and the air-permeable sponge (11) is arranged between the product to be detected (12) and the inner bottom of the detection bin (4).